In6Se7 thin films by heating thermally evaporated indium and chemical bath deposited selenium multilayers

► This paper reports preparation of In6Se7 thin films by a non-toxic process of selenization using chemical bath deposited selenium. ► The structure, morphology, optical and electrical properties of In6Se7 thin films are described in this article. ► X-ray diffraction studies showed the formation of monoclinic In6Se7. ► The effect of indium layer thickness and selenium deposition time on the structure, electrical and optical properties of In6Se7 thin films is described. ► This material is having good scope as a photovoltaic material.